A possible question? (Q3)

I think you are off to a good start with this question. Yet I think there is a big difference between watching/reading environmental news and actively talking about it. I am just speculating here, but I would bet that those who actively discuss environmental issues are more active in trying to live "sustainably" that those who just read about it. If this is the case our results could misrepresent what we are trying to measure through the question.